Brief introduction of twenty-four solar terms and their meanings

The solar terms of 1 and 24 are special festivals in the calendar to express the change of natural rhythm and establish "December architecture". Four years old, three months in spring, summer, autumn and winter, two solar terms each month, each solar term has its own unique meaning. Twenty-four solar terms accurately reflect the change of natural rhythm and play an extremely important role in people's daily life. It is not only a seasonal system that guides agricultural production, but also a folk system that contains rich folk customs. The twenty-four solar terms contain a long cultural connotation and historical accumulation, and are an important part of the long history and culture of the Chinese nation.

2. Twenty-four solar terms are the product of ancient farming civilization. It is a knowledge system formed by ancient ancestors who followed the farming season and realized the changing laws of seasons, climate and phenology in the middle of a year by observing the movement of celestial bodies. The twenty-four solar terms were originally formulated according to the changes of stars. The Big Dipper rotates once and bucket handle rotates once clockwise, which is called one of the "years" (Figure). The current "twenty-four solar terms" are formulated according to the position of the sun on the return to the ecliptic, that is, the annual movement track of the sun is divided into 24 equal parts, each 15 is 1, and each 1 is a solar term, starting in beginning of spring and ending in severe cold.